news sunday. >> lowering tax rates by broadening the tax base works. and you can -- >> but i have to -- you haven't given me the math. >> i don't have the time -- it would take me too long to go through all of the math. let me say it this way, you can lower tax rates by 20% across the board, by closing loopholes and still have preferences for the middle class for things like charitable deductions for home purchases, for health care. >> where is the math? and is mitt romney going to be under pressure in this debate to produce the specifics as to how it will all add up? >> well, andrea, first that's a laughable question. where's the president's plan? he's had four years, 23 million people don't have work. so let's start with that. >> the question was asked by -- the question was asked by chris wallace on fox, being asked by other republicans, where is the math, how do you add up those tax cuts, even eliminating some deductions, which deductions would you eliminate, let's be specific and how will you do that and reach deficit reduction, which programs will be cut? >> the question is,